Sealing washer



FIG. 1 is a top and front perspective view of the sealing washer, showing my new design;

FIG. 2 is a top and rear perspective view of the design illustrated in FIG. 1; and,

FIG. 3 is a side elevation view of the design illustrated in FIG. 1. 

CLAIM The ornamental design for a sealing washer, as shown and described. 